Rotary pump and motor



April 13 1926'.

P. KLEINHANS ROTARY PUMP AND MOTOR 2 Sheefs-Shegt 1 Filed: Sept. 4, 1924 A ril 13 1926. v.

P; KLElNl-[ANS ROTARY PUMP AND MOTOR 1 Filed Sept. 4, .1924 2 Sheets-Sheet 2 Patented Apr. 13, 1926 UNITED STATES PATENT our-ice.

PAUL KLEI'NHANS,

OF LA-NDSBERGON THEWARTHE, GERMANY.

Application filed September 4,1924. Serialiio. 735,935.

To all whom it may concern.

Be it known that 1, subject of the German PAUL KLEINHANS, a Republic, and residing at Land'sberg-onsthesWarthe, Germany, have invented certain new and useful Improvements in Rotary of which the following Pumps and Motors, is a specification. I

Both prime movers and pumps are known, in which pistons or pairs of pistons work in a stationary annular cylinder, the arrangement being such that they alternately revolve and remain stationary,

only a fraction of a each time they move,

performing,

working space.

The present invention relates to a modified form of this known type of machine and relates more particularly to a pump,

W hich however with only slight alterations may act as a prime mover. the invention is, that tionary and revolving supplying the pump or the gas and by the prime mover, gains considerably as and compactness.

The invention also relates to the construc-' tron of the gearing co- An essential feature of the alternately stapistons are used for liquid't'o be delivered by the air mixture aspired whereby the machine regards convenience acting with the pistons, which either converts the intermittent motion of the pistons into a continuous rotary motion or conversely converts a continuous rotary motion derived fromany.

source of power into an intermittent alternating motion of the pistons (when the invention is apphedto' a pump), one set of.

pistons always being stationary,

other set is in motion. The accompanying vention as applled to'a Fig. 1 is a section perpendicular to the axis of the pump.

drawings show the inpump. v

Fig. 2 is a corresponding longitudinal section.

Fig. 2 shows a mo movers.

ditication for prime while the Figs. 3, i, and 5'show the'pistons in elevation and in section.

Figs. 6, 7 and 8 show the gearing,

Fig. 6 being a front elevation,

Fig. 7 a section on line A-B of Fig.6 and 8 a section on line GD ofFig. 6.

Around the periphery of the annular oyl. inder not the pump (Figs. 1 and 2) the delivery valves 7) are mounted, which deliver into a common annular pipe 0,. is provided with an outlet In the annular cylinder are two pairs of segmental pistons cl, which revolve internittently in the same direction of rotation, one pair being stationary,.while the other pair is in motion. The valve pistons are actuated by a stop motion deviee in the following manner. On two shat-ts e andf,

one of which is inside the other and on each of which a pair of segmental pistons is mounted, are slotteddiscs g, 7 one disc being 60 in advance of the other disc (Figs. 2, 6 mil), in the radiating slots '0 of which discs rollers h engage, which are mounted on the discs 9. In Fig. 2 three discs 9 are shown, so that-on either side of the middle disc 9 a set of three: rollers h is fixed between the said middle disc and one of the two outer' discs, the rollers of one set 60 in advance of those of the other, set. A short piece of each slot 0 in the discs 9 near the periphery of the discwidens out, the sides of this part being curved and, as shown in Figs: 7 and 8, forming parts of a circle having its centre in the axis of the shaft p of the of these curved parts of the slots .0 are laterally extending projections .s and the former of which are on one side and the lat-- ter on the other side of'either slotted disc g. On the sides of the discs 9 facing the slotted discs 9 and fairly close to the rollersh are short arcuate ribs t and F.

The driving gear acts as follows. machine under consideration is, as previously assumed,- constructed as a; pump and is intended to work as such, the pistons (l must be alternately moved and arrested by the driving gear. The shaft 1) is rotated untormly from any source of power, for

which a to the atmosphere.

disc 9,. At the edges If as instance by means of the crank j, so that the discs q with the driving rollers it also rotate uniformily. The rollers 71. engage alternately with the two slotted discs in such a manner that, when one slotted disc is rotated, the other slotted disc is held stationary or caused to dwell. A slotted disc will rotate as soon as a driving roller it has engaged in a slot 0 of the corresponding driving disc. The driving roller it will then carry the said slotted disc along with it,

rotating it through whereupon it is arrested by means of ribs t 6 and the projections s 8 These parts are so arranged that they only release the slotted disc g, when. a driving roller it has completely entered a slot 0 and similarly they arrest the slotted disc again, when the driving roller 7i leaves the slot 0 after turning the slotted disc through 60.

In Figs. 7 and 8, which are symmetrical to one another, a driving roller it, is shown as just entering a slot 0 after having rolled along the are provided with the projection s and forming the widened extension of the slot 0. As long as the driving roller it rolls along the arc with the projection s of the slotted disc 9, it of course prevents the slotted disc rotating in the direction of the arrow (Fig. 7). At the same time the rib moving in advance of the said roller it. moves along the projections s of the previous slot 0 in the slotted disc 9 and by this means arrests during this period the slotted disc 9 in the opposite sense.

The driving roller it follows directly the rib Z which together with the projection s arrests the slotted disc 9 also in the same direction. When the driving roller it has penetrated so far into the slot 0 that it can carry the slotted disc 9 along with it, the ribs t and 25 will have slid past the projection 8 and 8 so that the slotted disc 9 can be moved and will be turned by the driving roller it through 60. After this turning movement the driving roller it leaves the slot 0 and rolls along the'curved part provided with the projection s at the same time and prevents the slotted disc from turning backwards, this locking of the slotted disc being continued by the following rib t At the same time the rib of the following driving roller will have come in contact with the projection s and thereby prevents the slotted disc 9 from turning forwards, so that the slotted disc 9 is held stationary.

The sequence of operations is repeated three times during each revolution of the discs 9 with each slotted disc 9 in correspondence with the three rollers hi of each set of driving rollers and, as the two slotted discs and the two sets of driving rollers have a relative angular displacement of 60, one

slotted disc 9 will be alternately held stationary, while the other is turning and vice versa, so that the pair of pistons (Z, one of which is keyed on the shaft 6 and the other on the shaft f, will alternately turn ahead and remain stationary.

)Vhen the slotted discs 9 have performed a complete revolution, the discs 9 with the shaft p will have performed two revolutions. The effect of this is that one pair of pistons is always stationary, while the other is turning.

)Vhen the opposed sides of two pistons approach one another, when the machine is acting as a pump, a pressure period is produced, so that the liquid is forced through the valves 0 and, when the opposed sides of the two pistons recede from one another, a suction period is produced, so that the liquid is sucked in through the valves (Z in the pistons. When the mechanism is acting as a motor, the power is transmitted in the converse manner through the shafts e and to the gearing and from the latter to the fly-wheel, the slotted discs 9 carrying the rollers 7i and the discs 9 on which the rollers are mounted along with them. As in this reverse movement each slotted disc 9 causes a roller 72. to move through an arc of 60 while the two slotted discs act alternately on their respecive sets of rollers, an uninterrupted rotary motion of the shaft 10 and of the discs 9 on the same, is produced. The suction valves (Z in the pistons are the same as in the case of the pump, while the exhaust valves are mounted in aseparate annular passage 6 as shown in Fig. 2, and are controlled in a known manner by tappits Z)" actuated by a cam disc (not shown). Tl e segmental pistons are all of the same length and of the same volume as the working spaces formed between the piston surfaces.

The two piston discs is (Figs. 35), to which the pairs of pistons are rigidly fixed, are each of the same thickness as half the piston diameter or piston width, so that the inner projecting halves of one pair of pissons Z (Fig. 3) slide on and in close contact with the front surface m (Fig. i) of the disc supporting the other pair of pistons, so that the periphery of the front surface m of the piston supporting discs, which also slide in close contact with each other, forms an inner close fitting wall of the annular cylin der. The piston supportin discs also form the passage for the inflow of the medium to the valve pistons (Figs. 3 and 5), so that all the working spaces thus formed are fed by a single passage, which opens into the centre of the rotating pistons (Fig. 2). On one pair of pistons turning forwards, a pressure is exerted 011 the valve spindle n, which overcomes the stressing of the valve spring and (in the case of the pump) allows the 7 medium to fiowin without resistance,thus

considerably increasing machine.

I claim;

the efficiency of the '1. A rotary pump, comprising-in combination a stationary annular cylinder, pistons capable of rotating inthesaid annular cylinder, rotatable discs for supporting the said pistons, hollow spaces in the said pistons and discs for the passage of the liquid to be-sucked by the causing the pistons alternately to rotate and remain stationary as set forth.

2. A rotary pump, comprising in combination a stationary annular cylinder,pistons capable of rotating in the said annular cylinder, rotatable discs for supporting the said pistons, hollow spaces in the said pistons'and discs for the passage of the liquid to be'sucked by the pump, means for causing-the pistons alternately to rotate and remainstationary, spring loaded suction valves in the said pistons, corresponding delivery valves in the said cylinder and means for opening the same outwardly, the distance between the delivery valves corresponding to the length of the stroke of the pistons, as set forth,

3. A rotary pump, comprising in combination a stationary annular cylinder, pistons capable of rotating in the said annular cylinder, rotata le discs for supporting the said pistons, hollow spaces in the said pistons and discs for the passage of the liquid to be sucked by the pump, means for causing the pistons alternately to rotate and remain stationary, spring loaded suction valves in the said pistons, having their spindles extending beyond the delivery side of the pistons, whereby the said valvecan be opened by the pressure on the delivery side of the pistons in opposition to the springs with which they are loaded, delivery valves in the said cylinder corresponding to the said suction valves and means for opening the delivery valves outwardly, the distance between the delivery valves corresponding to the length of the stroke of the pistons,

4:. A rotary pump or motor, comprising 1n combination a stationary annular cylinder, pistons capable of rotating in the said annular cylinder, rotatable discs for supporting the said pistons, hollow spaces in the said pistons and discs the pistons alternately to rotate and remain stationary, spring loaded suction valves in the said pistons,

suction valves, the distance between the expump and means for as .set. forth. l

I for the passage of the fiuid to be acted upon, means for causing having their spindles extending beyond the delivery side of the pishaust valves c'orrespondin'g'to the length-of the stroke of the pistons,";and spring -opei ated means f-orclosingt he exhaust valves, asj

5. A rotary pump ormotor comprising in combination a stationary annular-cylinder, two. set's'of pistons-capable of rotating in the said cylinder, valves in the said pistons, corresponding valves in the said cylinder, the distance between the valves corresponding to the stroke of the pistons, two concentric shafts surrounded by the said cylinder, one set of pistons being keyed on one shaft and the other set of pistons being keyed on the other shaft, a disc on each of the said shafts, a shaft, discs mounted on the said shaft and rollers on the saidjdiscs, with the discs on theconcentric shafts for controlling the motion of the two sets of pistons, as set forth.

6.- A rotary pump or motor comprising in combination a stationary annular cylinder, two sets of pistons capable of rotating in the said cylinder, valves in the said pistons, corresponding valves in the said cylinder, the distance between the valves corresponding to the stroke of the pistons, two concentric shafts surrounded by the said cylinder, one set of pistons being keyed on one shaft and the other set of pistons bein'g keyed on the other shaft, a slotted shaft, discs mounted on the said shaft, rollers on the said discs, discs having a widened portion towards the periphery of the discs and having the sides of the widened portion arcuate with the centre of curvature in the centre of the roller disc, and arcuate ribs on the roller discs also having tre of the roller disc, for the purpose of braking the motion of the rollers for controlling the motion of the pistons, as set forth.

7. A rotary pump or motor comprising in combinationa stationary annular cylinder, two sets of pistons capable of rotating in the said cylinder, valves in the said pistons, corresponding valves in the said cylinders, the distance between the valves corresponding to the stroke of the pistons, two concentric shafts surrounded by the said cylinder, one set of'pistons being keyed on one shaft and the other set of pistons being keyed Y on the other shaft, a slotted disc mounted on eachof the said shafts, a shaft, discs mounted on the said shaft, rollers on the said discs, the'slots in the slotted discs capable of co-acting their centre of curvature in the cendisc mounted on each of the said shafts, a

the slots in the slotted the centre of the roller disc,

roller disc, an arcuate projecting piece along one side of the widened portion of each slot on one side of each slotted disc and a similar arcuate projecting piece along the other 5 side of the widened portion of each slot on the other side of each slotted disc, the said arcuate pieces on the slotted discs being capable oI" co-acting With the said arcuate ribs on the roller discs, for the purpose of alternately arresting and releasing the slotted discs and controlling the motion of the pistons, as set forth. t

In testimony whereof I have signed my name to this specification.

PAUL KLEIN HANS. 

